XML 113 R96.htm IDEA: XBRL DOCUMENT v3.20.4
FINANCIAL RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Balance Sheet Classification (Details) - CAD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items]      
Current asset $ 61 $ 101  
Long-term asset 1,378 1,478  
Derivative financial assets 1,011 1,439 $ 1,500
Long-term liability (318) (90)  
Before Offset Amount      
Disclosure of detailed information about financial instruments [line items]      
Current asset 61 101  
Long-term asset 1,378 1,478  
Derivative financial assets 1,439 1,579  
Current liability (110) (50)  
Long-term liability (318) (90)  
Derivative financial liabilities $ (428) $ (140)